Kotoba Academy

Im bad at summaries but I'll try:
Decades from now, another world is brewing, full of monsters and humans. The tell includes the demon boy by the name of Jintan Yadomi. He isn't just any demon... He's a prince. Prince of what? Read and find out.
NOTE: This story probably won't be continued. It may or it might.
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Chapters:

Decades from now, apart from Milky Way, the main galaxy for
earth, among the other galaxies, the world that nobody ever knew,
Aegis had appeared after a decade. Then a few centuries from that
time, cities were formed, even people, actual people, and were
living in that peaceful looking planet. Aegis is the type of
planet, which had been formed by itself in the universe,
sometimes it's peaceful, and sometimes it goes into chaos. In
Aegis, there was a nation called Aeolis Republica. It was a very
huge nation created by Signo, the spirit who had created Aegis,
but it had been split into two boundaries. The boundary on the
right is the humans' territories and the one of the left, is the
monster's territories. Yes, monsters and humans lived together in
one world. Aegis had 60% of the humans and 40% there were the
monsters. Though it wasn't much of a big deal to the humans to
see that there were monsters, it still bothered them and strayed
away from the species. Nevertheless, most humans (and some kids)
liked them because they were fun, and few humans hated them
because there were gruesome and cruel. Even though the humans
found them no harm, it was said by the government that the
monsters must be extremely careful and to take caution when
making contact with the humans, for most of the humans are
willing to kill and vanquish them from the world.

The capital of Aeolis Republica is Leila. It was a large, modern
metropolis where its scenery always looked so beautiful despite
its hard times with the chaos and the disastrous events. Leila is
like 50% America & 50% South Korea (and a hint of Japan) with
all the markets and the routes and the majestic-looking
buildings. There's more to the part. Among the mountains that
were always filled with grass that seems to grow greener every
time you stare at it, up on the centre of the cliff, was a
humongous cherry blossom tree that stood strong and firm despite
being there for almost 300 years. Most people of Aegis called it
the World Tree, while others just called it Ukiyo, which means
"Life". If you looked more closely, you can see that it had the
magic barrier around it, to keep the cherry blossom petals fresh
no matter the weather, and to keep peace and give life.

But, of course, that's not just it.

Kotoba Academy, one of the three main schools, which those also
had been created by Signo, while the rest were created by the
monsters and/or humans, was an academy for the monsters.
Vampires, faeries, trolls, demons, angels, werewolves, and even
mythical beings, attended at that school. But even if it's an
academy for monsters, few humans attended there as well. It's an
academy for magic/combat training for monsters, but besides that,
it had classes, like normal high school classes, the classes
which humans attend. So, It depends how they will manage in
school and out of school. It would either turn into a world of
peace, or turn into a world of chaos.